c# - 为什么 Assert.AreEqual 因相同的对象而失败？

Question

我有一个包含这些属性的类:

public class Person
{
    public long Id { get; set; }

    public string Name { get; set; }

    public int? IdCountry { get; set; }
    public virtual Country Country { get; set; }
    public int? IdState { get; set; }
    public virtual State State { get; set; }
}

public class Country
{
    public int Id { get; set; }
    public string Name { get; set; }
}

public class State
{
    public int Id { get; set; }
    public string Name { get; set; }
    public int IdCountry { get; set; }
    public virtual Country Country { get; set; }
}

在单元测试中，我创建了 2 个具有相同值的对象

Person expected = new Person()
{
    Name = "blablablbla",
    Id = 1
};
Person actual = PessoaFactory.Create(Name: "blablablbla", Id: 1);
Assert.AreEqual<Person>(expected, actual);

但是 Assert.AreEqual 抛出异常。

Answer 1

您需要覆盖 Equals 来比较对象。默认实现比较引用，而不是值。查看MSDN documentation .